Submitted by Daniele Santos (danielesantos.htl@gmail.com) on 2017-02-21T21:04:19Z No. of bitstreams: 1 Eduardo.pdf: 1544695 bytes, checksum: ad700b85bc86a6f4889a9f52275ab887 (MD5) / Approved for entry into archive by Janete de Oliveira Feitosa (janete.feitosa@fgv.br) on 2017-02-23T17:38:59Z (GMT) No. of bitstreams: 1 Eduardo.pdf: 1544695 bytes, checksum: ad700b85bc86a6f4889a9f52275ab887 (MD5) / Made available in DSpace on 2017-03-02T13:43:19Z (GMT). No. of bitstreams: 1 Eduardo.pdf: 1544695 bytes, checksum: ad700b85bc86a6f4889a9f52275ab887 (MD5) Previous issue date: 2016-11-10 / Today there exist a myriad of different types of physical access control systems (PACS) that use a smart card or mobile device as a key. The mobile device enabled smart locks, as they are often referred to, operate using either Wi-Fi or Bluetooth. This thesis has explored the use of a third emerging wireless technology called Near Field Communication (NFC) available in mobile devices such as smartphones. Near Field Communication (NFC) technology is a relatively new technology that is on the rise and is included in almost every new mobile device. By leveraging Near Field Communication (NFC) enabled mobile devices, a highly secure access control system can be achieved and developed taking advantage of the computational power of smartphones in comparison to traditional methods the business implications are huge, Several different authentication and encryption protocols, mobile operating systems and Near Field Communication (NFC) modes of operation where analyzed and evaluated. After considerations technical considerations the Secure Remote Password authentication protocol on top of Near Field Communication (NFC) card emulation (CE) scheme with the client application running on smartphones operating system (OS) was selected. This thesis shows that Near Field Communication (NFC) enables a mobile device to act as a key in a secure access control system (PACS) and as the user base for NFC grows larger so will the likelihood that we will come to see more of these types of systems in business and organizations.

Submitted by Diego dos Santos Borba (dborba@uffs.edu.br) on 2017-04-13T19:31:35Z No. of bitstreams: 1 PALARO.pdf: 1223303 bytes, checksum: 95b154ff276608c31816ddf6b96236fe (MD5) / Made available in DSpace on 2017-04-13T19:31:35Z (GMT). No. of bitstreams: 1 PALARO.pdf: 1223303 bytes, checksum: 95b154ff276608c31816ddf6b96236fe (MD5) Previous issue date: 2014-05-27 / Neste trabalho analisamos o discurso sobre o ensino de L?ngua Portuguesa materializado em documentos do Instituto Federal de Educa??o, Ci?ncia e Tecnologia do Rio Grande do Sul (IFRS) - C?mpus Erechim, institui??o que faz parte da Educa??o Profissional e Tecnol?gica. Constitu?mos o arquivo da pesquisa por Projetos Pedag?gicos de cursos t?cnicos e superiores dessa institui??o, buscando compreender que saberes sobre a L?ngua Portuguesa est?o em funcionamento nesse discurso. Assumimos como aporte te?rico-metodol?gico a teoria da An?lise de Discurso (AD), de orienta??o pecheutiana e a Hist?ria das Ideias Lingu?sticas (HIL), mobilizando as no??es de ideologia, mem?ria, forma??o discursiva, interdiscurso, intradiscurso, condi??es de produ??o, historicidade, temporalidade e par?frase. Analisamos seis recortes discursivos (RDs) constitu?dos por sequ?ncias discursivas (SDs) recortadas desses documentos de acordo com regularidades. Nesse corpus, atentamos para quais saberes s?o postos em funcionamento, compreendendo como est? constitu?da a discursividade sobre o ensino de L?ngua Portuguesa na/da Educa??o Profissional e Tecnol?gica em documentos institucionais. Chegamos ? compreens?o de que uma l?ngua ?til ao trabalho, ensinada para instrumentalizar o sujeito-trabalhador ? constitu?da na conflu?ncia entre saberes da forma??o humana e da forma??o profissional. Essa l?ngua ?til ao trabalho predomina no discurso da institui??o materializado nos Projetos Pedag?gicos. Para chegar a essa compreens?o, analisamos o funcionamento da mem?ria da Educa??o Profissional e Tecnol?gica e do ensino de L?ngua Portuguesa em resson?ncia nos documentos institucionais que constituem o arquivo de nossa pesquisa. Dessa forma, compreendemos que funcionam nesse discurso saberes tecnicistas e saberes gramaticais, respons?veis pelo imagin?rio de l?ngua ?til ao trabalho. Compreendemos tamb?m a conflu?ncia desses sentidos com outros vindos de discursividades contempor?neas que trazem saberes de teorias lingu?sticas mais recentes para o discurso. Existe uma conflu?ncia de saberes, que n?o fica apenas no encontro, mas que produz um efeito de tens?o entre eles. Tens?o entre o mesmo e o diferente, entre a mem?ria e a atualidade. Dessa forma, saberes de teorias contempor?neas do ensino de l?ngua se confluem com saberes do ensino instrumental, do ensino gramatical. E uma l?ngua ?til ao trabalho ? constitu?da nesse lugar de entremeio. / This study analyzes the discourse of the Portuguese language?s education materialized in documents from the Federal Institute of Education, Science and Technology of Rio Grande do Sul (FIRS) - Campus Erechim, institution that is part of Vocational and Technical Education. Our research?s file is formed by pedagogical projects of technical and higher courses of this institution, seeking to understand what knowledge about the Portuguese language are operating in that speech. We assume the theoretical and methodological contributions of the pecheutiana theory of Discourse Analysis (DA), and Linguistic History of Ideas (LHI), mobilizing notions of ideology, memory, discursive formation, interdiscourse, intradiscourse, production conditions, historicity, temporality and paraphrase. We analyze six discursive excerpts (DEs) consisting of discursive sequences (DSs) cropped of the documents according to its regularities. In this corpus, we look at which knowledge are functioning and how it is constituted understanding the discourse about Portuguese language?s education in Vocational and Technical Education in institutional documents. We came to the realization that a useful language to work, taught to instrumentalized the subjetc-worker is formed at the confluence of knowledge of human development and vocational training. This language useful to work predominates in the discourse of the institution materialized in pedagogical projects. To reach this understanding, we analyze the functioning of the memory of Vocational and Technical Education and the Portuguese language?s education resonating in institutional documents that constitute our research?s archive. Thus, we understand that works in this discourse, technologic knowledge and grammatical knowledge, responsible for the imaginary of useful work language. We also understand the confluence of these meanings with others from contemporary discourses that bring knowledge of latest linguistic theories for speech. There is a confluence of knowledge, which is not only meeting, but which has the effect of tension between them. Tension between the same and the different, between memory and actuality. Thus, knowledge of contemporary theories of language?s education may converge with knowledge of instrumental?s education, grammar?s education. And a useful language to work in this place consists of junction.

Made available in DSpace on 2014-12-17T14:19:47Z (GMT). No. of bitstreams: 1 JoseLM.pdf: 404421 bytes, checksum: 1f5c51fb36053ff54c71601726979af6 (MD5) Previous issue date: 2008-12-10 / The study and research field of Education is wide and rich, mainly when it goes towards the empirical area of social reality. This research focuses on young and adult subjects who cannot read or write, although they had had access to and attended schools in Natal/RN. The locus of the research are the Municipal Schools that develop the Youth and Adults Education program EJA, having representatives from the North, South, East and West zones of the city, in a total of 6 municipal schools. It analyzes these subjects' replies to the questions: "Why are there young and adults who attended school but still cannot read or write?", What are the exclusion situations they face by not being able to read or write?". From a dialectic view on the subject, the research's strategy for data collection is the semi-structured interview to collect the replies given by the interviewees; replies that are separated by analysis categories presented charts of ideas. The research's results are analyzed and lead us to the conclusion that the affective, organic, cognitive, social, political and pedagogical factors are mentioned by the subjects as reasons why they can not dominate the reading or writing skills. The youth and adults interviewed are not happy with their school failure; the reading and writing learning is something that eases their social inclusion into a society that privileges such abilities, and that with it they could avoid the social exclusion they faced at school, in the work place, at home, in church, at health centers, on the street, at their children's school and in public assistance institutions / O campo de pesquisa e estudos da educa??o ? vasto e rico, principalmente quando adentra-se no campo emp?rico da realidade social. Nessa investiga??o o corpus de aten??o s?o os sujeitos jovens e adultos que n?o dominam a leitura e a escrita, embora tenham tido acesso e freq?entado o espa?o escolar no munic?pio de Natal/RN. O l?cus da pesquisa s?o as Escolas da Rede Municipal de Ensino que desenvolvem a Educa??o de Jovens e Adultos EJA, representantes das zonas Norte, Sul, Leste e Oeste da cidade, perfazendo um total de seis escolas da Rede Municipal de ensino, pertencentes a diferentes regi?es da capital potiguar. Analisam-se as vozes dos sujeitos ao responderem as quest?es Por que existem jovens e adultos escolarizados sem o dom?nio da leitura e da escrita ? Quais as situa??es de exclus?o enfrentadas pelo n?o dom?nio da leitura e da escrita entre os jovens e adultos pesquisados ? A partir de uma vis?o dial?tica do assunto, a estrat?gia de pesquisa para a coleta de dados ? a entrevista semi-estruturada para apreender a voz dos sujeitos da pesquisa, as quais s?o divididas em categorias de an?lise apresentadas em um mapa das id?ias. Analisam-se os resultados da investiga??o, concluindo-se que fatores afetivos, org?nicos, cognitivos, sociais, pol?ticos e pedag?gicos s?o citados pelos sujeitos como motivos para o n?o dom?nio da leitura e da escrita. Os jovens e adultos entrevistados n?o se sentem satisfeitos com o fracasso escolar; a aprendizagem da leitura e da escrita ? um dom?nio que facilita a inclus?o social em uma sociedade que privilegia tais habilidades, podendo minimizar as situa??es de exclus?o social que os mesmos enfrentaram no espa?o escolar, no ambiente de trabalho e de emprego, em casa, na igreja, nos postos de atendimento ? sa?de, na rua, na escola dos filhos e em institui??o de atendimento p?blico, por causa da n?o aprendizagem

This paper aims to address possible psychoanalytical explanations for the heinous acts in which terrorists, particularly ISIS, engage. It focuses on Harold D. Lasswell’s principles of the id, ego, and superego as well as Tajfel and Turner’s social identity theory. Within the framework of these two theories, relevant psychological and social psychological theories are discussed in order to explore a possible connection between the psyche of violent perpetrators and their actions. By exploring these connections, I find that there may be more nuanced psychological explanations for these violent acts, which could lead to new methods of weakening perceived biases, intergroup conflicts, and extremist behavior.

Made available in DSpace on 2014-12-17T15:04:51Z (GMT). No. of bitstreams: 1 RobsonOS.pdf: 527706 bytes, checksum: 215f631ef1e4979b7dcc88ec12d7b013 (MD5) Previous issue date: 2008-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The aim of the present work is to contribute to the teaching-learning process in Mathematics through an alternative which tries to motivate the student so that he/she will learn the basic concepts of Complex Numbers and realize that they are not pointless. Therefore, this work s general objective is to construct a didactic sequence which contains structured activities that intends to build up, in each student s thought, the concept of Complex Numbers. The didactic sequence is initially based on a review of the main historical aspects which begot the construction of those numbers. Based on these aspects, and the theories of Richard Skemp, was elaborated a sequence of structured activities linked with Maths history, having the solution of quadratic equations as a main starting point. This should make learning more accessible, because this concept permeates the students previous work and, thus, they should be more familiar with it. The methodological intervention began with the application of that sequence of activities with grade students in public schools who did not yet know the concept of Complex Numbers. It was performed in three phases: a draft study, a draft study II and the final study. Each phase was applied in a different institution, where the classes were randomly divided into groups and each group would discuss and write down the concepts they had developed about Complex Numbers. We also use of another instrument of analysis which consisted of a recorded interview of a semi-structured type, trying to find out the ways the students thought in order to construct their own concepts, i.e. the solutions of the previous activity. Their ideas about Complex Numbers were categorized according to their similarities and then analyzed. The results of the analysis show that the concepts constructed by the students were pertinent and that they complemented each other this supports the conclusion that the use of structured activities is an efficient alternative for the teaching of mathematics / O presente estudo visa apresentar uma contribui??o para o processo de ensino-aprendizagem em matem?tica atrav?s de uma alternativa que se prop?e a trazer uma nova motiva??o ao aluno para que este adquira as primeiras id?ias relacionadas ao conceito de n?meros complexos percebendo que estes n?o s?o destitu?dos de sentido. Para tanto, o estudo tem como objetivo geral a constru??o de uma seq??ncia did?tica contendo atividades estruturadas, visando a forma??o dessas id?ias importantes para aquisi??o do conceito pelo aluno. O estudo baseia-se inicialmente em um resgate dos principais aspectos hist?ricos que deram origem ? constru??o desses n?meros. Diante desses aspectos, buscamos nos fundamentar em Richard Skemp na elabora??o de uma seq??ncia de atividades estruturadas onde incorporaremos a hist?ria da matem?tica e tendo como ponto de partida a resolu??o de equa??es quadr?ticas, entendendo que, dessa forma, estar?amos tornando a aprendizagem mais acess?vel, uma vez que esse conceito permeia as s?ries anteriores e, consequentemente, os alunos deveriam estar mais familiarizados a ele. A interven??o metodol?gica iniciou-se com a aplica??o dessa seq??ncia de atividades com alunos de terceiros anos do ensino m?dio de escolas p?blicas que ainda n?o conheciam o conceito de n?meros complexos e foi realizada em tr?s etapas que denominamos: estudo piloto I, estudo piloto II e estudo definitivo, cada uma delas em uma institui??o diferente; as turmas foram divididas aleatoriamente em grupos onde cada grupo escreveria as id?ias que haviam desenvolvido acerca dos n?meros complexos. Isso precedeu o uso de um outro instrumento de an?lise que se trata de uma entrevista gravada do tipo semiestruturada com o objetivo de apurar os caminhos tra?ados pelos alunos durante a resolu??o das atividades desenvolvidas. As id?ias adquiridas foram categorizadas por similaridades e, em seguida, analisadas. Os resultados das an?lises nos mostram que as id?ias formadas foram pertinentes, se completam entre si e fomentam a discuss?o de que o uso de atividades estruturadas com esse fim ? uma alternativa eficiente e poss?vel de ser aplicada, mesmo em realidades escolares mais desfavorecidas

Protocolos de autenticação e de estabelecimento de chaves são peças fundamentais em implementações de segurança para comunicação de dispositivos eletrônicos. Em aplicações que envolvam dispositivos com poder computacional restrito (tais como smartphones ou tablets) comunicando-se com um servidor, é primordial a escolha de protocolos eficientes e que necessitem de uma infraestrutura mais simples. Neste trabalho selecionamos e implementamos protocolos de acordo de chave seguros nos modelos de criptografia de chave pública baseado em identidade (ID-based) e sem certificado (Certificateless) em plataformas com processadores ARM. Comparamos tempos de execução, utilização de memória e uso do canal de comunicação. / Protocols for authentication and key establishment are fundamental parts in security implementations for electronic devices communication. In applications involving devices with limited computational power (such as smartphones and tablets) communicating with a server, the choice of efficient protocols that require a simpler infrastructure is essential. In this work we select and implement secure key agreement protocols in ID-based and Certificateless public key cryptography models on ARM processor platforms. We also compare running times, memory and network usage.

The diploma thesis is focused on selected designing works related to the design of a specific process of acid water stripping. The main purpose of the work is to describe the procedure and the obtained results for these performed design work based on the relevant assignment and the process requirements. In the introductory two chapters, the work focuses on process introduction and description of main process equipment. The following chapters are devoted to the description of the designing works, specifically simulation of the process in CHEMCAD, design calculation of the spiral plate heat exchanger for feed preheating, creation of 3D model and drawing documentation using AutoCAD Plant 3D and lastly strength analysis of the selected pipeline. The main outputs of this work are mainly generated result reports from the process and equipment simulation and strength analysis of the solved pipeline route, 3D model of the process and selected technical and drawing documentation. At the end of the diploma thesis, the performed activities and their outputs are summarized and evaluated.

Killer whales are the oceans’ apex predator and are known to have important effects on ecosystems. At Subantarctic Marion Island, southern Indian Ocean, they have only been studied opportunistically, resulting in limited knowledge of their ecosystem impact here. This dissertation describes the prey and seasonal abundance, estimates the population size and assesses the predatory impact of killer whales on seals and penguins at Marion Island, using dedicated and opportunistic shore-based observations and photographic identification, from 2006 to 2009. During 823 sightings of killer whales at Marion Island (2006 to 2009) 48 predation events were recorded; in only 10 cases could prey be identified. Killer whales fed on fur seals, elephant seals and penguins. Constant effort (dedicated) observations (259 hours, 2008 to 2009) showed that killer whale abundance, which peaked in September to December with a secondary peak in April to May, is linked to the abundance of seals and penguins. Mark-recapture analyses were performed using nearly 10 000 photographs taken from 2006 to 2009. Following careful quality control criteria 37 individuals were identified and a population size of 42 (95% CI = 35-50) individuals estimated using the open population POPAN parameterization in the software program MARK. The analytical approach is more rigorous than that used in any previous population size assessment at Marion Island. Finally, the above data were integrated to assess whether top-down control of seal and penguin populations at Marion Island is generally plausible using a simple process of elimination. Based on published data I predicted the energetic ingestion requirements of adult male and female killer whales as 1 394 MJ.day-1 and 1 028 MJ.day-1, respectively. Expanding these requirements to the 37 killer whales photographically identified at Marion Island, the population requires 40 600MJ.day-1. Based on available energy density and mass data, I predicted the energy content of available seal and penguin prey and calculated the rates at which killer whales would consume these prey in various scenarios. Penguins and Subantarctic fur seals are relatively insensitive to killer whale predation owing to their large population sizes (10 000s to 100 000s), conversely, the smaller populations (100s to 1 000s) of Antarctic fur seals and southern elephant seals are sensitive to predation, particularly the latter as they have a high energy content (approximately 2 000 to 9 000 MJ). Populations of these seals are currently increasing or stable and I conclude that presently killer whale predation is not driving population declines, although they clearly have the potential for regulation of these smaller populations. Thus, if population sizes were reduced by bottom-up processes, if killer whale diet shifted, or if prey availability changed, top-down control by killer whales could become significant. This study provides baseline information for the informed management and conservation of killer whales at Marion Island, identifies avenues for further research, and provides a foundation for the continuation of structured and dedicated killer whale research at Marion Island. / Dissertation (MSc)--University of Pretoria, 2011. / Zoology and Entomology / unrestricted

Sammanfattning Syfte: Syftet med detta examensarbete är att skapa ett ramverk för att underlätta valet av automatisk identifieringsteknik för tillverkningsföretag med tillhörande lagerhanteringsprocesser. Syftet är också att identifiera brister i Emballator Lagan Plasts nutida spårbarhetslösning, tillämpa ramverket för att välja en lämplig automatisk identifieringsteknik och utforma en bättre framtida spårbarhetslösning.  Metod: Denna studie är baserad i kvalitativ forskningsmetod och inkluderar en systematisk litteraturstudie, en intervjustudie och en fallstudie. Data till första forskningsfrågan insamlades genom en systematisk litteraturstudie och en intervjustudie med expert inom automatiska identifieringstekniker. Data till forskningsfråga två insamlades genom intervjuer med anställda hos Emballator Lagan Plast tillsammans med vetenskapliga artiklar.  Resultat: Genom att analysera data från den systematiska litteraturstudien gentemot data från intervjustudien sammanställdes ramverket för val av automatisk identifieringsteknik. Baserat på intervjuer med anställda identifierades brister i den nuvarande spårbarhetslösningen hos Emballator Lagan Plast. Ramverket tillämpades sedan för att välja automatisk identiferingsteknik som en del av den framtida spårbarhetslösningen. Den framtida spårbarhetslösningen baseras på 2D-streckkoder, förändringar i lagerhanteringsprocesserna samt mer utnyttjande av det tillgängliga lagerhanteringsystemet. / Abstract Purpose: The purpose of this thesis is to create a framework for manufacturing companies to facilitate the choice of auto-id technology. The purpose is also to identify faults in the current traceability solution at Emballator Lagan Plast, apply the framework to choose an auto-id technology and to suggest the future traceability solution.  Method: This thesis is based on qualitative method and includes a systematic literature review, an interview study and a case study. For research question one data was gathered through a systematic literature review and through an interview with an expert in the field of auto-id technologies. For research question two data was gathered through interviews with employees at Emballator Lagan Plast together with scientific articles.  Results: By analysing data from the systematic literature review and the interview the framework for choosing an auto-id technology was established. Based on interviews with employees’ faults in the current traceability solution at Emballator Lagan Plast was identified. The framework was applied to choose an auto-id technology as a part of the future traceability solution. The future traceability solution consists of 2D-barcodes, changes in warehouse processes and increased utilization of the warehouse management system.

Les résidus de médicaments font partie des polluants dits « émergents » pour lesquels il n’existe actuellement pas de réglementation quant à leur présence dans l’environnement. Afin d’anticiper un risque éventuel pour l’Homme et les milieux aquatiques il est, entre autres, nécessaire de réaliser un état des lieux de la contamination des systèmes aquatiques par ce type de micropolluants. Dans ce contexte, disposer de données de mesures de qualité (traçables et comparables) constitue un prérequis indispensable pour décider au mieux des politiques à conduire dans ce domaine. L’étude des psychotropes présente un enjeu important d’autant plus qu’il s’agit de molécules abondamment consommées.Les travaux conduits lors de cette thèse avaient deux objectifs principaux. Le premier était de caractériser l’occurrence environnementale de composés psychotropes. Le second objectif était de proposer des outils métrologiques permettant d’assurer l’exactitude, la traçabilité, la comparabilité mais également la représentativité des résultats de mesure.Dans un premier temps, une méthode multi-résidus par SPE-LC-MS² a été développée pour une sélection de composés psychotropes et d’autres médicaments de consommation courante. Les limites de quantification de la méthode étaient de l’ordre du ng.L-1. Cela a permis de caractériser leur occurrence dans différents cours d’eau et rejets de station d’épuration en France. En parallèle, une approche par échantillonnage intégratif a été développée et déployée dans différents sites. Cette stratégie complémentaire a permis d’établir les niveaux d’occurrence des 68 psychotropes et traceurs sélectionnés et de conduire une démarche de hiérarchisation dans le but d’établir une liste restreinte de composés d’intérêt. Enfin, une méthode de référence associant la dilution isotopique à la spectrométrie de masse (DI-MS) a été développée pour l’analyse de 24 psychotropes dans les eaux de surface. Elle se caractérise par des incertitudes élargies (k=2) inférieures à 10%. La mise en oeuvre de cette méthode dans des études environnementales a permis de mettre en évidence l’importance de la contribution de l’incertitude liée à l’échantillonnage par rapport à l’incertitude totale de mesure. / Pharmaceuticals and their residues belong to the so-called “emerging” pollutants for which no current regulation is applied regarding their presence in the environment. Monitoring the contamination of aquatic resources by these kinds of micropollutants is a necessity in order to anticipate potential effects regarding human health and ecosystems. In this context, data quality (traceability and comparability) is compulsory so as to take better decisions regarding policies to be driven. Psychotropic compounds, which are widely consumed, display a great concern in that field.This thesis aimed at characterizing occurrence of psychotropic compounds in the environment and putting forward metrological tools insuring accuracy, traceability, comparability as well as representativity of the measurement results.To that purpose, a SPE-LC-MS² multi-residue method has been developed for a selection of psychotropic compounds and other commonly consumed drugs. Method limits of quantification were in the range of ng.L-1 which enabled to characterize their occurrence in several surface waters and treated wastewaters. Concurrently, usage of integrative samplers was evaluated and applied on the field in different locations. Occurrence levels of 68 selected compounds were established by implementation of this complementary strategy in aquatic systems. Furthermore, results from measurement campaigns were used to rank studied compounds into a short list of interest. Finally, a reference method using isotopic dilution and mass spectrometry (DI-MS) was developed for the characterization of 24 psychotropic compounds in surface waters. Expanded uncertainties (k=2) inferior to 10% were obtained. Last be not least, implementing this method to environmental analysis emphasized the importance of sampling related uncertainties regarding to global measurement uncertainties.